Fig. 2: XRD data for the Zr-doped lithium aluminosilicate glass and glass-ceramics.

a In-house XRD patterns for the Zr-doped lithium aluminosilicate glass and glass-ceramics obtained by annealing at 770 °C for various annealing durations (shown on the right side of the figure). Closed circles and triangles: peak positions of cubic/tetragonal ZrO2 and β-quartz solid solutions, respectively. b Annealing duration dependence of the peak height (closed circles) and crystallite size (open triangles) extracted from the diffraction peak observed at 30°.